Automatic valve.



PATENTED SEPT. 1 1908.

M. L. GROVE. AUTOMATIC VALVE.

APPLICATION FILED APR.10,1907.

avwento z 1 UNIT D S AWENT OFFICE.

MARTIN L. .GROVE, OF TYLERSBURG, PENNSYLVANIA, ASSIGNOR O1" ONE-THIRD 'lO W. A.

WRAY, OF TYLERSBURG, PENNSYLVANIA, AND ONE-THIRD TO N. F. HOOVER, ()l" MARIEN- VILLE, PENNSYLVANIA.

AUTOMATIC VALVE.

Specification of Letters Patent.

Patented Sept. 1, 1908.

Application 'filed April 10, 1907. Serial No. 367,408.

To all whom it may concern:

Be it known that I, MARTIN L. GROVE, a

citizen of theUnited States of America, re-

- a specification, reference being had therein to the accompanying drawing.

This inventionrelates to valves, and the invention has for its object to provide an automatically actuated valve for gas supply pipes, wherein positive and reliable means areemployed for closing the valve should the gas pressure decrease or the supply of gas be entirely shut off.

My invention aims to prevent the asphyxi ation of persons within a compartment by the escape of gas which has been shut off and then turned on without the persons being aware of the fact. In this connection, my improved valve can be used for other purposes, but I have particularly designed the same for use in connection with gas'supply pipes leading to burners either of stoves or amp's. To this end,-I. have constructeda valve wherein a spherical body or ball controls the passage of gas through the valve. In connection with the sphericaI body or ball, I employ pivoted levers and a valve stem whereby the body or ball can be lockedin an elevated position to provide a continuous passage through the valve, I also employ a screen in the valve body for. preventing flakes'and solid matter from passing throughthe gas pipe to a burner.

The detail construction of myinvention will be hereinafter morefully described and then specifically pointed out in the appended claims, and referring to the drawing forming part of this specification, like numerals of reference designate corresponding parts throughout the several views, in which 2-- Figure 1 is a longitudinal'sectional view of a valve constructed in accordance with my invention, illustrating the spherical body or valve in position to shut off the flow of gas, Fig. 2 is a similar View illustrating the spherical body or ball valve moved to position to open the passageway for the-gas, and held in such position by the valve stem, Fig. 2 is a View similar to Fig. 2, illustrating the Valve stem in the elevated position, and the spherical body or valve resting in its seat where it is held by the pressure of gas passing through the valve body or casing, Fig. '3 is a longitudinal sectional view of the valve illustrat ing a modification of my invention, Fig. 4 is an elevation of the threaded plug used in connection with the valve, Fig. 5 is a perspective View of a fulcrumed lever constituting one of the parts of my invention, Fig. 6 is a perspective View of a pivoted plate used in connection with the valve, Fig, 7 is a perspective View of a perforated plate or screen comprising part'of my invention,

To'put my invention into practice, I construct my improved valve of a body 1 conforming to a T havin interiorly arranged threads 2. In one and of the valve body is connected a gas supply pipe 3, whilein the opposite end is secured a threaded plug 4, said plug connectin the outlet pipe 5 to the valve body. The p ug 4 is provided near its lower edge with a longitudinally dis osed bore 6 terminating in the recessed enr 7 of said plug, said recessed end having a seat 8 formed therein for a s he'rical body or ball 9. In the recessed end 0 the plug 4 is pivotally mounted a plate 10 having a bifurcated end 11. In the recessed end 7 of the plug 4' is also fulcrumed a lever 12, the longer arm 14 of which extends through the bifurcated end 11 of the plate 10 and m close proximity to the end of the bore 6. The shorter arm 15 of the lever protrudes outwardly beneath a perforated plate or screen 16 secured over the ifurcated end ,7 of the plug 4.

Threaded in ,the nipple 17 of the valve body 1 is a conventional form of housing and stufiing box--18 for an adjustable valve stem 19, said Valve stem carrying a hand wheel or lever 2() whereby the valve stem can be rotated to engage the shorter arm 15 of the lev 'er 12 and hold the longer arm in an elevated position, to sup ort the spherical body or all 9 above the inner end of the bore 6.

In Fig. 3 of the drawing, I have illustrated a slight modification of my invention, wherein the threaded stem 19 and the hand wheel 20 are dispensed with, and the spring supseat 8, and, the ressure of the gas against plate 10 causes t 1e ball or spherical body to e forced into the seat'S-in the position an elevated position at all ,times whereby gas can freely pass through the valve body 1.

I do not care to confine myself to the speciiic arrangement of the various parts of my invention and such changes in the size, proportion and minor details of construction, as are permissible by the appended claims, may be resorted to without departing from the spirit and scope of the invention.

What I claim and desire to secure by Letters Patent, is

1, In a valve of the type described, a body, a plug threaded insaid body and having a longitudinally disposed bore formed therein, oneend of said plug being recessed to provide a seat, a plate pivotally mounted in the recessed end of said plug, a lever,fulerurned in the recessed end of said plug, a ball mounted in the recessed end of said plug, a perforated plate or screen mounted over the recessed end of said plug, and bearing against said ball, and a valve stem adjustably mounted in said body and adapted to engage said fulcrumed lever, substantially as de scribed. V

2. In a valve of the typedescribed a body, a plug threaded therein and having a bore and provided atone end with a recess, a plate pivotally mounted in the recessed end of said plug, a lever fulcrulned in ,the'reces's" in said plug, a spherical valve in the recessed endof the plug and adapted to close the end of said here, andmeans carried by said body a plug threaded therein, said plug having a.)

bore formed therein, a lever fulcrumed at one end of said plug, a spherical valve mounted 111 a r'eoess'm theend of said lug and adapted to close said bore, a perorated'plate or screen mounted upon the end of said plug,

and means adapted to engage said lever forv normally holding said spherical valve inan elevated position.

4. A valve of the"typedscribedtzornprisingla body, a plug threaded therein, said plug having a bore formedtherein, a lever fulcrumed upon the inner end of said plug, a spherical valve 1n sald plug and adapted to close said bore, and a valve stem carried by said body and adapted to engage said lever for holding said spherical valve in anelevated position. v

5. A valveof the type described comprising a body, a plugthreaded therein, said plug having a bore threaded therein, a lever fulerumed upon the end of said plug, a valve in the plug and adapted t6 close the end of said bore, and means carried by, said valve body and adapted to engage the end of said lever for holding said spl'ierical body or ball in an elevated position.

In testimony'whereof I 'afii-X my signature in the presence of two witnesses.

- MARTIN L. GROVE. Witnesses:

MAX H. SROLOVITZ, SAMUEL PAYNE. 

